The 2022 High-energy Outburst and Radio Disappearing Act of the Magnetar 1E 1547.0–5408

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dc.citation.articleNumber153
dc.citation.journalTitleThe Astrophysical Journal
dc.citation.volumeNumber945
dc.contributor.authorLower, Marcus E.
dc.contributor.authorYounes, George
dc.contributor.authorScholz, Paul
dc.contributor.authorCamilo, Fernando
dc.contributor.authorDunn, Liam
dc.contributor.authorJohnston, Simon
dc.contributor.authorEnoto, Teruaki
dc.contributor.authorSarkissian, John M.
dc.contributor.authorReynolds, John E.
dc.contributor.authorPalmer, David M.
dc.contributor.authorArzoumanian, Zaven
dc.contributor.authorBaring, Matthew G.
dc.contributor.authorGendreau, Keith
dc.contributor.authorGöğüş, Ersin
dc.contributor.authorGuillot, Sebastien
dc.contributor.authorHorst, Alexander J. van der
dc.contributor.authorHu, Chin-Ping
dc.contributor.authorKouveliotou, Chryssa
dc.contributor.authorLin, Lin
dc.contributor.authorMalacaria, Christian
dc.contributor.authorStewart, Rachael
dc.contributor.authorWadiasingh, Zorawar
dc.date.accessioned2023-04-25T14:47:50Z
dc.date.available2023-04-25T14:47:50Z
dc.date.issued2023
dc.description.abstractWe report the radio and high-energy properties of a new outburst from the radio-loud magnetar 1E 1547.0−5408. Following the detection of a short burst from the source with Swift-BAT on 2022 April 7, observations by NICER detected an increased flux peaking at (6.0 ± 0.4) × 10−11 erg s−1 cm−2 in the soft X-ray band, falling to a baseline level of 1.7 × 10−11 erg s−1 cm−2 over a 17 day period. Joint spectroscopic measurements by NICER and NuSTAR indicated no change in the hard nonthermal tail despite the prominent increase in soft X-rays. Observations at radio wavelengths with Murriyang, the 64 m Parkes radio telescope, revealed that the persistent radio emission from the magnetar disappeared at least 22 days prior to the initial Swift-BAT detection and was redetected two weeks later. Such behavior is unprecedented in a radio-loud magnetar, and may point to an unnoticed slow rise in the high-energy activity prior to the detected short bursts. Finally, our combined radio and X-ray timing revealed the outburst coincided with a spin-up glitch, where the spin frequency and spin-down rate increased by 0.2 ± 0.1 μHz and (−2.4 ± 0.1) × 10−12 s−2, respectively. A linear increase in the spin-down rate of (−2.0 ± 0.1) × 10−19 s−3 was also observed over 147 days of postoutburst timing. Our results suggest that the outburst may have been associated with a reconfiguration of the quasi-polar field lines, likely signaling a changing twist, accompanied by spatially broader heating of the surface and a brief quenching of the radio signal, yet without any measurable impact on the hard X-ray properties.
dc.identifier.citationLower, Marcus E., Younes, George, Scholz, Paul, et al.. "The 2022 High-energy Outburst and Radio Disappearing Act of the Magnetar 1E 1547.0–5408." <i>The Astrophysical Journal,</i> 945, (2023) IOP Publishing: https://doi.org/10.3847/1538-4357/acbc7c.
dc.identifier.digitalLower_2023_ApJ_945_153
dc.identifier.doihttps://doi.org/10.3847/1538-4357/acbc7c
dc.identifier.urihttps://hdl.handle.net/1911/114822
dc.language.isoeng
dc.publisherIOP Publishing
dc.rightsOriginal content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleThe 2022 High-energy Outburst and Radio Disappearing Act of the Magnetar 1E 1547.0–5408
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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